Now that is all well and good but it isn't always as easy as it sounds to get that extra space. Usually to do this you would need to invite 32 people and have them all sign up then download a client for their OS and sign in.. This could take forever and be really frustrating.

However I believe I have managed to find the fastest way to reach the referral limit and without the need to rely other people or and using only 1 machine - usually if you use the same machine to register the invites it will invalidate your bonus :(

Okay lets get to it and earn you up to 16GB of free bonus Dropbox storage.

Install Dropbox on Ubuntu - Open up a terminal (Ctrl + Alt + t). After the ~$ write:

sudo apt-get install nautilus-dropbox

Then enter in your password

$ sudo apt-get install nautilus-dropbox
[sudo] password for user:

When asked 'Do you want to continue' hit enter.

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
python-gpgme
The following NEW packages will be installed
nautilus-dropbox python-gpgme
0 upgraded, 2 newly installed, 0 to remove and 62 not upgraded.
Need to get 153 kB of archives.
After this operation, 639 kB of additional disk space will be used.
Do you want to continue [Y/n]?

A window will appear, click 'Restart Nautilus' then 'Next'.

On the next window click 'Start Dropbox'.

If you get a message come up saying "Dropbox is running from an unsupported location", click 'Don't ask again'.

You should now see a 'Log in to Dropbox' window.

You'll be glad to know the main preparation is now out of the way, Leave this window open and move on the the next step.

In your web browser follow this link to your referrals page on the dropbox website where you will find your personal referral link - It will look something like http://db.tt/<your-token>

You will need to log in to your account if you are not already

Open your referral link in a new tab/window. - Should look like this:

Sign up for another account from your referral link - If you have other email addresses start with those.

If you don't have other email addresses, or have run out, all you need to do is make a temporary one up (In the examaple I used 'test.email@test-email.com' with no problems). You will need to do this more than once to get all of the possible free space, therefore I recomend that you write your made up addresses down and use the same password for each one to make it easier

It may be best to write this all down like I have done below:

Email

Password

email1@madeUpDomain.com

password

email2@madeUpDomain.com

password

email3@madeUpDomain.com

password

Once you have signed up with your alternate/temporary account leave the page open and move to the next step

Go back to Virtualbox and you should still have the 'Log in to Dropbox' window open. Enter in the details of your new alternate/temporary account and click 'Next'. Do not continue with the set-up after this point, just close all of the windows and shut down Ubuntu.